brew services restart nginx

Stopping nginx... (might take a while)
==> Successfully stopped nginx (label: homebrew.mxcl.nginx)
==> Successfully started nginx (label: homebrew.mxcl.nginx)

但是實際上沒啟動成功，查看下錯誤日誌

tail -n 10  /usr/local/var/log/nginx/error.log 

2018/01/25 10:56:53 [emerg] 54933#0: bind() to 0.0.0.0:80 failed (13: Permission denied)
2018/01/25 10:57:40 [emerg] 55281#0: bind() to 0.0.0.0:80 failed (13: Permission denied)
2018/01/25 11:20:22 [emerg] 62763#0: bind() to 0.0.0.0:80 failed (13: Permission denied)
2018/01/25 11:20:48 [emerg] 63020#0: bind() to 0.0.0.0:80 failed (13: Permission denied)

查看看端口占用情況：

sudo lsof -i:80

沒發現異常，突然想到之前安裝過kong,會使用openresty,而openresty 又自帶一個nginx，所以先卸載掉（準備使用minikube來運行kong）
但還是不行。

但是把80換成8080端口就可以，最後看到一篇文章（找不到鏈接了）裏的方法搞定：

sudo chown root:wheel /usr/local/Cellar/nginx/1.12.2_1/bin/nginx 
sudo chown root:wheel /usr/local/Cellar/nginx/1.12.2_1/bin/nginx 

解決Mac nginx問題 [emerg] 54933#0: bind() to 0.0.0.0:80 failed (13: Permission denied)